Blue fan clutch mod...Thread has gone to hell, read at your own risk (2 Viewers)

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Change the fluid and swap the unit onto your rig. All of those that I have done have kicked major tail, IMHO the best clutch made for the 80.
 
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Hi guys, I guess this is a country-terminology thing, but what kind of oil can one use ? 75W/90 diff oil ? 6000 weight grade doesn't mean much to me :confused:

(Stock clutch on the 95/96 LCs, a bit more cooling would be great for Z)
 
ta... I'm cool with self education - that why I'm on this forum - the problem is the local suppliers have no clue what I'm on about :D
Looks like mail order from the UK is required...
like here: TeamXRay co uk, XR359307 Premium Silicone Oil 7000 cSt

...looks like the RC car community use this stuff
 
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Changed the fluid last night. Had to buy some quality screwdrivers as those #3 screws were a pain (tight).

Was not able to adjust the two adjustment screws. They were tight and I didn't want to strip them. Should have taken a picture but they were sitting more 2/3's in the slot Left up, right down. Anything I can infer from their current position?

Installing the fan Cdan did as well.
 
jlbuk said:
ta... I'm cool with self education - that why I'm on this forum - the problem is the local suppliers have no clue what I'm on about :D
Looks like mail order from the UK is required...
like here: TeamXRay co uk, XR359307 Premium Silicone Oil 7000 cSt

...looks like the RC car community use this stuff
Click to expand...

The local hobby store used to carry it now I mail order it as well. Probably the best bet.
 
landtank said:
The position of the screws can't be used as any kind of indicator to where the timing is set.
Click to expand...

So its still at the stock setting and I am expecting better performance with the other blade for a SC vehicle and with the new diff fluid.

Thanks for the research.

I bet you have a pretty cool workshop
 
Romer said:
So its still at the stock setting and I am expecting better performance with the other blade for a SC vehicle and with the new diff fluid.

Thanks for the research.

I bet you have a pretty cool workshop
Click to expand...

Ken, have you sealed it all up again? If not, I'd at least take the temp that it opens at for a reference. If it is waaaay off I'd keep at those screws till they turn loose cause I think that the combination of the correct timing and the correct fan clutch fluid is really the right way to optomize this. JMHO. :cheers:
 
turbocruiser said:
Ken, have you sealed it all up again? If not, I'd at least take the temp that it opens at for a reference. If it is waaaay off I'd keep at those screws till they turn loose cause I think that the combination of the correct timing and the correct fan clutch fluid is really the right way to optomize this. JMHO. :cheers:
Click to expand...

Yes I have an larger fan to. Going to run it for a bit without the shroud, just to see. Course this is a flawed test since I should have done on step at a time. I won't really know which of the 3 is the biggest improvement.

I read Kevin's description of why you should keep the shroud. makes sense, but thought I would see how the system performs with all these mods.
 
Just replaced the water pump last weekend in my '91.
The original (1991) green fan clutch checked out fine, no leaky mess and seems to operate properly so I put it back in.
Would have replaced it with OEM, but the closest oem part was in CA and would have required me to be without the vehicle for another several days while waiting for part.

While I had the WP/fan and shroud out I replaced all the hoses with oem and changed out the clamps as well.
But instead of using the breeze or torque clamps I just bought the standard Napa stainless steel clamps that have the slits in them.
To avoid any damage to the hoses, I added a HD metal foil liner to the inside of the clamps using a roll of leftover HVAC tape that I had from working on my home's a/c plenum in the attic.

I tested it out with a spare piece of heater hose tightened/overtorqued onto a large bolt and left it overnight while the truck was waiting on parts.
The next day removed clamp, no cuts or separation of the hose material.
Just thought this might help some others here that are looking for a less expensive alternative to the pricey breeze clamps.

Oh and another trick I used during the job was to connect several nylon zip ties and loop it around the fan's shaft. the nylon zip ties should make a loop big enough to hold in place just above the top edge of the fan shroud. This made removal and installation of the shroud and fan/fan clutch together a relatively painless process.
Just remember to snip the nylon ziptie/loop off when done.
 
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Romer said:
Yes I have an larger fan to. Going to run it for a bit without the shroud, just to see. Course this is a flawed test since I should have done on step at a time. I won't really know which of the 3 is the biggest improvement.

I read Kevin's description of why you should keep the shroud. makes sense, but thought I would see how the system performs with all these mods.
Click to expand...

So we got a rocket scientist who's thrown the Scientific Method of changing only 1 variable at a time out the window! Grrreat! :D :flipoff2: :D Actually I prolly would do the same thing out of impatience but it would be wonderful to know at least when your clutch is opening to see if it was set at 100, 110, 120, what. At least you can say cummulatively that the result was 4 degrees or 5 or whatever will be based on a thicker fan clutch fluid and a better blade; I don't think you're going to go back to stock on either item and I don't think you'll need to do anything more after that either - between your excellent maintenance efforts, your JDM Aux Fan, your better fan blade and the thicker fan clutch fluid, I think you're gonna be cooler than ever! :cheers:
 
turbocruiser said:
So we got a rocket scientist who's thrown the Scientific Method of changing only 1 variable at a time out the window! Grrreat! :D :flipoff2: :D Actually I prolly would do the same thing out of impatience but it would be wonderful to know at least when your clutch is opening to see if it was set at 100, 110, 120, what. At least you can say cummulatively that the result was 4 degrees or 5 or whatever will be based on a thicker fan clutch fluid and a better blade; I don't think you're going to go back to stock on either item and I don't think you'll need to do anything more after that either - between your excellent maintenance efforts, your JDM Aux Fan, your better fan blade and the thicker fan clutch fluid, I think you're gonna be cooler than ever! :cheers:
Click to expand...

The truth be told, kind broke the shroud and wanted to see how it was working before I replaced it :D

I use to be a Rocket Scientist, now I'm in management so I want results yesterday :D
 
Romer said:
I use to be a Rocket Scientist, now I'm in management so I want results yesterday :D
Click to expand...

That sir, is the quote of the week! :cheers::cheers::cheers:


Ohh, sorry that you broke the shroud but, I think that this will really reveal how it helps with airflow through the radiator. Its an easy enough thing to swap that you can do a back to back on the same afternoon probably and post the data here. I just recently rubber trip taped my radiator to the front cross-clip and am collecting data on how that helped. :cheers:
 
I broke my shroud as well...now duck tape is holding it together:hillbilly: I know that's not good:whoops:
 
Loppy said:
This thread appears to address toy trucks and celicas of age. Is this the same procedure I'd use for my 93 80?
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Other than fill amount, (the blue hub takes ~50ml) the procedure is the same.
 
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